What is CVE-2021-24812?

CVE-2021-24812 is a medium-severity vulnerability in Wpdeveloper Betterlinks, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-11-23.

How severe is CVE-2021-24812?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Is CVE-2021-24812 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Wpdeveloper Betterlinks

CVE-2021-24812

The BetterLinks WordPress plugin before 1.2.6 does not sanitise and escape some of imported link fields, which could lead to Stored Cross-Site Scripting issues when an admin import a malicious CSV.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-11-23 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Wpdeveloper Betterlinks
Betterlinks – Shorten, Track And Manage Any Url — versions 1.2.6

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

wpscan.com/vulnerability/6bc8fff1-ff10-4175-8a46-563f0f26f96a (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2021-24812?: CVE-2021-24812 is a medium-severity vulnerability in Wpdeveloper Betterlinks, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-11-23.
How severe is CVE-2021-24812?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2021-24812 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.